baber/WOPTO huggingface dataset:
Patent WO-0168768-A1 (WO)
Title: Copolymere gelifiant reagissant a l'environnement
Inventor: CHENG YU-LING
IPC: A61L27/52
Filed: 2001-03-15
Abstract: La présente invention concerne une composition de copolymère pouvant se gélifier qui comprend un copolymère dans un solvant. Le copolymère présente la structure A(B)n, dans laquelle le noyau (A) est soluble dans le solvant, les branches (B) pouvant passer de l'état soluble à l'état insoluble dans le solvant en fonction d'une condition environnementale et n > 1. La composition forme un gel dans des conditions environnementales dans lesquelles B est insoluble, par formation d'agrégats B. Des copolymères séquencés comprenant du polyéthylène glycol (PEG) et du poly(N-isopropylacrylamide) (PNIPAAm) ayant une forme liquide à température ambiante dans des conditions aqueuses et une forme gel à température corporelle sont présentés. Des compositions de copolymère selon la présente invention peuvent être utilisées pour former des implants in situ utiles dans des formulations à libération lente de molécules biologiquement actives.
Patent CA-2002514-A1 (CA)
Inventor: LEHTO JORMA
IPC: B65H19/28
Filed: 1989-11-08
Abstract: Abstract A method and an arrangement for fastening a web (4) to a core (10)  in a reeling device.  In the method glue is applied before the cutting off of the web between the core and the web from above the core, and the web is pressed against the core so that it ad-heres to it, whereby the web is cut off only after it has adhered to the core.  The arrangement comprises fastening means provided with a glue spreading device mounted in the core chute in such a manner that after the  core  chute has  been turned  above  the  support rolls the glue spreading device is positioned between the web and the core above the core,  the glue sp-reading device being arranged to apply glue between the core and the web before the web is cut off. (Fig. 2)
Patent CA-2003643-A1 (CA)
Title: Framing tape
Inventor: ARMSTRONG BERNARD G
IPC: G09F3/04
Filed: 1989-11-22
Abstract: ABSTRACT           A method of determining the position of inaccessible elements of a structure by employing a medium with indicia set out at predetermined intervals therewith coinciding with the standardized predetermined spacings of the inaccessible elements of said structure.
Patent CA-2005192-A1 (CA)
Title: Methods and compositions for the prophylaxis and treatment of hepatitis b virus infections
Inventor: PALESE PETER M
IPC: C07H19/04
Filed: 1989-12-11
Abstract: ABSTRACT       Methods and compositions for preventing or treating hepatitis B virus (HBV) infections charac-terized by carbocyclic analogues of purine and pyri-midine nucleosides.
Patent CA-2005317-A1 (CA)
Title: Facilitating endoscopy
Inventor: BLANCO ERNEST E
IPC: A61B1/00
Filed: 1989-12-13
Abstract: FASCILITATING ENDOSCOPY Abstract of the Disclosure A method for inserting an instrument into the gastrointestinal tract of a mammal, by emplacing at least a portion of a flexible liner to form within the intestine an inner tube within an outer tube, the inner tube defining a lumen lying within the intestine and having a distal end accessible via the anal opening from outside the body of the mammal, and thereafter passing the instrument into the lumen via its distal end. Another aspect is the combination of an elongate evertible liner, a liner support chamber having a proximal port and a distal port, the liner having its two ends attached respectively at the ports, and a pressurizer for increasing the pressure within the chamber to cause the liner to be everted, the liner comprising a material characterized by having a wall thickness to diameter ratio and a zero strain elasticity modulus whose product is less than 4.0 lb/inch2, preferably less than 1.0 lb/inch2, and a wall thickness to diameter ratio and a 100% strain modulus of elasticity whose product is greater than 0.5 lb/inch2, preferably greater than 2.0 lb/inch2.  In another aspect, at least a portion of the liner is gathered in the space between the ports, the liner defines a lumen between the ports, and a rigid guide tube lying within the lumen and between the ports provides an unobstructed passage for the instrument within at least a portion of the lumen.  In another aspect, a tube extends distally from the distal port, the end of the liner attached to the distal port is everted over and gathered along the tube, and a pressurizer increases the pressure within the liner during eversion to aid the gathered portion of the liner to slide along and be released from the tube.
Patent CA-2008018-A1 (CA)
Title: Thermoplastic resin composition
Inventor: PATEL HITENDRA
IPC: C08L67/02
Filed: 1990-01-18
Abstract: ABSTRACT     Thermoplastic resin composition and shaped object made thereof comprising 1 to 99 parts by weight of a monovinyl aromatic monomer-unsaturated nitrile copolymer and 99 to 1 parts by weight of a copolyester derived from an aromatic polycarboxylic compound, ethylene glycol and an additional C3-20 (cyclo)aliphatic glycol.  The copolymer has a monovinyl aromatic monomer content of about 20 to 98 parts by weight and an unsaturated nitrile content of about 80 to 2 parts by weight.  The copolyester contains in its glycol portion about 97 to 5 mole percent of ethylene glycol residues and about 3 to 95 mole percent of residues of the additional glycol.   36,834-F
Patent CA-2009901-A1 (CA)
Title: Cathodic protection analyzer
Inventor: STEELE DAVID S
IPC: G01N17/02
Filed: 1990-02-13
Abstract: 55,124 ABSTRACT OF THE DISCLOSURE           An instrument for measuring cathodic protection voltage  levels  receives  a  signal  representative  of  an externally applied, full-wave rectified power line frequen-cy  cathodic  protection  potential,  which  is  subject  to electrical  interference.   The  fundamental  power  line frequency component and odd harmonics of that fundamental component  are  removed  to  produce  a  filtered  signal. Selected parameters of the filtered signal are measured to provide  an indication of  the  adequacy  of  the  cathodic protection potential.
Patent CA-2012995-A1 (CA)
Title: Particulate detergent additive product, preparation and use thereof in detergent compositions
Inventor: EMERY WILLIAM D
IPC: C11D17/06
Filed: 1990-03-23
Abstract: ABSTRACT            Stable, non-friable, non-dusty and fast-dissolving detergent additive containing bodies having a shape of substantially rounded particles of a size ranging from 100 to 2000 µm are disclosed, each body comprising a core particle comprising a solid particulate storage-sensitive detergent additive material and an organic binder material having a melting point from 25° to 80°C, which core particle is provided with an outer coating of an organic material having a melting point below that of the binder material and solubility in water at 40°C greater than 20% by weight, said bodies having a pore volume of not more than 0.25 cm3/gram and compression strength expressed as compression modulus greater than 0.5 x 106 N/m2. A process for preparing the bodies by a high shear energy mixing process in a high-speed mixer/ granulator. Preferred detergent additive materials are peroxyacids and a peroxyacid bleach precursor.
Patent CA-2017138-A1 (CA)
Inventor: LIPPOLD HANS-JOACHIM
IPC: B29C65/00
Filed: 1990-05-19
Abstract: Filter cartridge, in particular with a block-like shape, comprising a plurality of fold walls created by folding a permeable filter medium in a zig-zag fashion and which is provided with offsets formed by scoring so that a medium to be filtered passes through from one edge area of the zig-zag folding in the direction of the edge area of the folding  on  the  opposite  side,  whereby  the  offsets  of adjacent fold walls which face one another contact each other as spacers and that said filter medium is at least hardenable  in  the  region  of  said  offsets  under  the influence of heat,  wherein the permeable filter medium comprises fibres of thermoplastic material and that the configuration of the fibres becomes more compact whereby the rigidity of the filter medium is  increased by the welding of the filter medium under the influence of heat in the region of the offsets.
Patent CA-2020882-A1 (CA)
Title: Fast response photosensitive opal glasses
Inventor: BORRELLI NICHOLAS F
IPC: C03C4/04
Filed: 1990-07-11
Abstract: Abstract of the Disclosure This invention is directed to photosensitivity opacifi-able glasses requiring very short exposures to ultraviolet radiation to effect the development of opacity therein during a subsequent heat treatment thereof.  The glasses consist essentially, expressed in terms of weight percent on the oxide basis, of about 14 18% Na2O, 0-6% ZnO, 6-12% Al2O3, 0-5% B2O3, 65-72% SiO2, and 0-0.2% Sb2O3, and 0.007-0.04% Ag, 0.008-0.05% Ceo2, 0.7-1.25% Br, and 1.5-2.5% F as analyzed in the glass, the sum of those components constituting at least 90% of the total composition.
Patent CA-2025118-A1 (CA)
Title: Preservative for ophthalmic solutions
Inventor: JANSSEN HERWIG
IPC: A61K9/00
Filed: 1990-09-12
Abstract: ABSTRACT           PRESERVATIVE FOR OPHTHALMIC SOLUTIONS            An ophthalmic formulation comprising a salt of sepazonium or a similar imidazolium compound as a preservative is provided.
Patent CA-2025915-A1 (CA)
Inventor: LLOYD KURT M
IPC: B66F9/07
Filed: 1990-09-21
Abstract: Abstract of the Disclosure A mast structure for a storage and retrieval machine is disclosed which includes first and second vertical members having lengths affixed to each other.  The second vertical member includes a plate extending along the length of the second vertical member and spaced from the first vertical member in the direction of the path of travel of a base of the storage and retrieval machine.  The first and second vertical members respectively have cross-section areas perpendicular to their lengths which are substantially equal to each other.  The first and second vertical members together have a physical center and a centroidal axis both extending along the length of the members which may be adjacent to each other and preferably coincide with each other so that the two members together have a maximum section modulus in the direction of the path of movement of the base.  The first vertical member has a tubular cross-section shape for guiding a carriage of the storage and retrieval machine along the length of the mass structure which is of a rectangular shape.  The second vertical member is tapered so that the cross-section area of the second vertical member decreases in an upward direction to decrease the section modulus of the mast structure at its upper end where impact loading is less.
Patent CA-2026200-A1 (CA)
Title: Combined surgical needle-suture device and method for its manufacture
Inventor: KORTHOFF HERBERT W
IPC: A61F2/00
Filed: 1990-09-25
Abstract: ABSTRACT OF THE DISCLOSURE A suture is attached to a surgical needle possessing a shank of reduced diameter.  Attachment is accomplished by means of a shrinkable tubing which is fitted about the shank of the needle and an end of the suture, application of heat to the tubing effecting its shrinkage with consequent secure attachment of the needle to the suture.
Patent CA-2026933-A1 (CA)
Title: Cover assembly for an airbag unit
Inventor: RAFFERTY SCOTT
IPC: B60R21/2165
Filed: 1990-10-04
Abstract: A COVER ASSEMBLY FOR AN AIRBAG UNIT         Abstract of the Disclosure A cover for an airbag unit includes first and second separate door members each having a polyvinyl chloride outer shell, a urethane foam pad and a yieldable thin metal back plate with a side flange connecting each of the first and second door members to an airbag housing to define a soft-feel horn hub within a steering wheel having a styling line thereacross; the two members are adhered to a rigid urethane foam member to prevent separation therebetween.  The rigid urethane foam member fills between the door members and the airbag unit such that deployment of the airbag unit will immediately impact thereon to cause the thin metal back plates to hinge outwardly with respect to the housing to open the two separate door members for airbag deployment.
Patent CA-2027395-A1 (CA)
Inventor: BRIGHT JOHN H
IPC: C09D161/20
Filed: 1990-10-11
Abstract: 31,107 THERMOSETTING COATING COMPOSITIONS WITH ETHERIFIELD METHYLOLATED ALIPHATIC GUANAMINES                 ABSTRACT OF THE INVENTION         Disclosed  is   a   method   of   preparing substantially  fully methylolated substantially  fully etherified, and substantially monomeric N,N,N',N'-tetraalkoxymethyl cyclohexanecarboguanamine crosslink-ing agents.  These crosslinking agents have viscosities of less than 1000 centipoises and are useful in curable compositions   in   combination   with   polyfunctional materials such as acrylic and polyester resins.
Patent CA-2030021-A1 (CA)
Title: System and method for atomic access to an input/output device with direct memory access
Inventor: KELLEHER BRIAN M
IPC: G06F13/12
Filed: 1990-11-15
Abstract: ABSTRACT OF THE DISCLOSURE      A system (30) for atomic access to an I/O device with DMA includes a CPU  (32)  connected to a floating point processor  (FPU)  (34)  by bus  (36).    The  CPU  (32)  is connected by a system bus (38) to a random access memory (RAM)  (40),  a  cache  (42)  and  an  interface  (44)  in graphics subsystem (45).  The interface (44) is connected by bus (46) to graphics processor (48).  In this system, graphics subsystem  (45) is  an  I/O device,  and atomic access to it is required.   Command packet interface (44) to the graphics  subsystem  (45)  transfers geometry and graphics context information from main memory (40) to the graphics  subsystem  (45).    For such  transfers,  an application writes a list of commands to a physically contiguous  locked-down  memory buffer  (47)  in  its  own address space.  Since the system (30) has DMA, the buffer (47) resides in the main memory system (40).   When the buffer  (47)  is  full,  the CPU  (32)  tells the graphics subsystem  (45), via a read from an I/O address on the graphics subsystem (45), that it should begin a transfer of  the  command  packet.    Status  of  the  operation  is returned as a result of the I/O read transaction.  After initiating  the  command  packet  transfer,  the  graphics subsystem  (45)  parses  the  packet  and  executes  the appropriate operations atomically.
Patent CA-2033573-A1 (CA)
Title: Developer material including styrene-maleic anhydride copolymer and reactive organic acid
Inventor: AMICK TRUDE
IPC: G03F7/105
Filed: 1991-01-03
Abstract: Abstract of Disclosure A developer material produced by the process comprising the steps of:         mixing and melting together a developer composition comprising  esterfied or hydrolyzed styrene-maleic anhydride copolymer and an organic acid or metal salt threof capable of reacting with a chromogenic electron donating colorless precursor to form a visible image;  cooling said melted mixture to form a solid material is disclosed; and dispersing said solid material in a coating medium. The developer sheet is particularly useful in photosensitive imaging systems.
Patent CA-2037972-A1 (CA)
Inventor: FRENKIEL RICHARD
IPC: H04M1/72511
Filed: 1991-03-11
Abstract: Abstract of the Disclosure A channel scanning arrangement for automatically selecting an available one from multiple communication channels with a minimum probability of interference and without delay is provided for a cordless telephone. This arrangement avoids causing and receiving interference on a channel by scanning all available channels when the cordless telephone is not in use and prioritizing these channels in the order of most recent observed activity. When a user of a handset unit associated with the cordless telephone desires to communicate with a base unit, also associated with the telephone, the handset and base units communicate briefly on the last used channel. When communication between the handset unit and the base unithas been established, the base unit moves and also causes the handset unit to move to the channel that has been unused by any other cordless telephone for the longestperiod of time.
Patent CA-2041801-A1 (CA)
Inventor: ISHITOKU TAKESHI
IPC: C07C323/44
Filed: 1991-05-03
Abstract: ABSTRACT    The present invention provides a process for preparing a quanidine derivative of the formula (II):                        (III) wherein R denotes lower alkyl, which comprises reacting a disulfide derivative of the formula (I):                                             (I) wherein R is as defined above, with a diacetyl derivative of the formula (II):                                           (II) wherein X is halogen, in the presence of a thiol derivative and a basic compound.
Patent CA-2042759-A1 (CA)
Title: Fibre optic measuring device, rate gyro, stabilisation system and magnetic field or current sensor
Inventor: LEFEVRE HERVE
IPC: G01C19/72
Filed: 1991-05-16
Abstract: ABSTRACT FIBRE OPTIC MEASURING DEVICE, RATE GYRO, STABILISATION SYSTEM AND MAGNETIC FIELD OR CURRENT SENSOR.         The invention relates to a fibre optic measuring device  in which the variation in a measured parameter engenders  a  phase  difference  between  two  waves.  It comprises a SAGNAC ring interferometer  (2)  in which two counter-propagating   waves   propagate;   a   polarisation splitter (6) spatially splits the two polarisations which will  propagate  in  the  interferometer  (2),  the  inter-ferometer   (2)   comprises   a   polarisation   conserving birefringent  fibre  (7)  having  two  ends  having  neutral birefringence axes, each of the ends of the polarisation conserving fibre (7) being connected to one of the gates (6b) and (6c) of the polarisation splitter (6).        It comprises a birefringent component, placed ahead of the polarisation splitter  (6)  and introducing a path difference greater than the coherence length of the source (1) between the two polarised waves.         FIGURE 1.
Patent CA-2045106-A1 (CA)
Title: Production of high viscosity index lubricants
Inventor: DEGNAN THOMAS F
IPC: C10G47/20
Filed: 1991-06-20
Abstract: Petroleum wax feeds are converted to high viscosity index lubricants by a two-step hydrocracking-isomerization process in which the wax feed is initially subjected to hydrocracking under mild conditions with a conversion to non-tube range products of no more than about 30 weight percent of the feed. The hydrocracking is carried out at a hydrogen pressure of at least 1000 psig (7000 kPa) using an amorphous catalyst which preferentially removes the aromatic components present in the initial feed. The hydrocracked effluent is then subjected to hydroisomerization in a second step using a low acidity zeolite beta catalyst which effects a preferential isomerization on the paraffin components to less waxy, high V.I. isoparaffins. The second stage may be operated at high pressure by cascading the first stage product into the second stage or at a lower pressure, typically from 200 to 1000 psig. The second stage catalyst is preferably a noble metal containing zeolite beta catalyst which contains boron as a framework component of the zeolite to give a low alpha value, typically below 10, The second stage is carried out at relatively low temperature, typically from 600 to 650°F with a 650°F+ conversion in the range of 10 to 20 weight percent of the second stage feed but with high selectivity for isomerization of the paraffins. A final dewaxing step to target pour point may be used with relatively low loss, typically no more than 15 weight percent, during this dewaxing. The final products typically have V.I. values in excess of 140 and usually in the range of 143 to 147 and are characterized by exceptional stability.
Patent CA-2047417-A1 (CA)
Title: Continuous reactors and processes
Inventor: SHIRTUM ROBERT P
IPC: B01J19/24
Filed: 1991-07-19
Abstract: ABSTRACT         A continuous reactor system and process for employing such a system.  Embodiments of the reactor system include a horizontal or vertical reactor system having a cylindrical multi-compartment vessel, the compartments intercommunicating with each other, the vessel including means for removing vapor with reaction product or by-products and means for removing liquid effluent with reaction products or by-products and means for flowing reactants and catalyst into each compartment and, optionally, agitators in each compartment.  The present process and reactor system may be employed for producing reaction products, for example, liquid epoxy resins.     38,223A-F
Patent CA-2049076-A1 (CA)
Title: Measuring electrode
Inventor: BORISOVICH RUBIN L
IPC: H01L21/66
Filed: 1991-08-13
Abstract: Abstract A measuring electrode (1) for making an electric contact with an object, in particular a semiconductor body (2), comprises an electrically conductive liquid, said liquid contacting the surface of the object via capillaries of a capillary mate-rial, said capillaries debouching at said surface. According to the invention the whole electrode body consists of capilla-ry material, said material being fillable by an electrically conductive liquid, with the electrically conductive liquid being retained in the electrode body and fed onto the surface only by the capillary forces of said capillary material. The described construction results in easy handling of the device and accurate and repeatable measurements.            (Fig. 1)
Patent CA-2050160-A1 (CA)
Title: Icon based query system
Inventor: BRETAN IVAN P
IPC: G06F12/00
Filed: 1991-08-28
Abstract: ABSTRACT            The invention relates to a method of querying a data base in a computer system containing input means,  processor means,  graphical display means and storage means.  The data base contains objects relating to a specified and limited  domain of  knowledge.  A  query  is  composed by direct manipulation of graphical representations of said objects on a screen.  The graphical representations are stored in memory, and each such graphical representation has a unique link to an entity in a conceptual schema, said schema containing a first set of records of data (entities) which are language independent representations of the  objects  in the data base.  The  invention  also relates to a query composition apparatus,  suitable for retrieval of information from data bases. It comprises a data processor, a display unit with a manipulation area for manipulating graphical representations of data items stored  in  the  data  base,  and  a  stored  formalized description of the data base, said description being kept in storage and containing data records representing the items in the data base.
Patent CA-2050783-A1 (CA)
Title: Process for the preparation of 2-mercaptobenzothiazole
Inventor: BERGFELD MANFRED
IPC: C07D277/72
Filed: 1991-09-06
Abstract: Abstract:         The  invention  relates  to  a  process  for  the preparation  of  2-mercaptobenzothiazole  from  aniline, sulphur and carbon disulphide under pressure and the separation of the 2-mercaptobenzothiazole from the crude reaction product by cooling and recycling the by-products into the reactor together with aniline,  sulphur and carbon disulphide, the reaction being carried out using a residence time in the reactor of at least one hour at temperatures of 220 - 280°C and said reaction being discontinued before the reaction equilibrium is reached and a maximum hydrogen sulphide pressure being maintained on cooling by mixing the crude reaction product with carbon  disulphide  at  above  100°C  and  the  hydrogen sulphide  being  removed  completely  only  after  the crystallisation of the 2-mercaptobenzothiazole.